build(deps): update virtualenv requirement from ~=20.7 to ~=20.11

[dependabot]

Updates the requirements on virtualenv to permit the latest version.

Changelog

Sourced from virtualenv's changelog.

v20.11.1 (2021-12-29)

Bugfixes - 20.11.1

- Bump embed setuptools to ``60.1.1`` from ``60.1.0`` - by :user:`gaborbernat`. (`[#2258](https://github.com/pypa/virtualenv/issues/2258) <https://github.com/pypa/virtualenv/issues/2258>`_)
v20.11.0 (2021-12-28)
Features - 20.11.0

• Avoid deprecation warning from py-filelock argument - by :user:ofek. ([#2237](https://github.com/pypa/virtualenv/issues/2237) <https://github.com/pypa/virtualenv/issues/2237>_)
• Upgrade embedded setuptools to 61.1.0 from 58.3.0 - by :user:gaborbernat. ([#2240](https://github.com/pypa/virtualenv/issues/2240) <https://github.com/pypa/virtualenv/issues/2240>_)
• Drop the runtime dependency of backports.entry-points-selectable - by :user:hroncok. ([#2246](https://github.com/pypa/virtualenv/issues/2246) <https://github.com/pypa/virtualenv/issues/2246>_)
• Fish: PATH variables should not be quoted when being set - by :user:hroncok. ([#2248](https://github.com/pypa/virtualenv/issues/2248) <https://github.com/pypa/virtualenv/issues/2248>_)

v20.10.0 (2021-11-01)

Features - 20.10.0

- If a ``"venv"`` install scheme exists in ``sysconfig``, virtualenv now uses it to create new virtual environments.
  This allows Python distributors, such as Fedora, to patch/replace the default install scheme without affecting
  the paths in new virtual environments.
  A similar technique `was proposed to Python, for the venv module <https://bugs.python.org/issue45413>`_ - by ``hroncok`` (`[#2208](https://github.com/pypa/virtualenv/issues/2208) <https://github.com/pypa/virtualenv/issues/2208>`_)
- The activated virtualenv prompt is now always wrapped in parentheses. This
  affects venvs created with the ``--prompt`` attribute, and matches virtualenv's
  behaviour on par with venv. (`[#2224](https://github.com/pypa/virtualenv/issues/2224) <https://github.com/pypa/virtualenv/issues/2224>`_)
Bugfixes - 20.10.0

• Fix broken prompt set up by activate.bat - by :user:SiggyBar. ([#2225](https://github.com/pypa/virtualenv/issues/2225) <https://github.com/pypa/virtualenv/issues/2225>_)

v20.9.0 (2021-10-23)

Features - 20.9.0

- Special-case ``--prompt .`` to the name of the current directory - by :user:`rkm`. (`[#2220](https://github.com/pypa/virtualenv/issues/2220) <https://github.com/pypa/virtualenv/issues/2220>`_)
- Add libffi-8.dll to pypy windows `[#2218](https://github.com/pypa/virtualenv/issues/2218) <https://github.com/pypa/virtualenv/issues/2218>`_ - by :user:`mattip`
Bugfixes - 20.9.0

• Fixed path collision that could lead to a PermissionError or writing to system directories when using PyPy3.8 - by :user:mgorny. ([#2182](https://github.com/pypa/virtualenv/issues/2182) <https://github.com/pypa/virtualenv/issues/2182>_)
• Upgrade embedded setuptools to 58.3.0 from 58.1.0 and pip to 21.3.1 from 21.2.4 - by

... (truncated)

Commits

• 4d90b4f release 20.11.1
• 1594bae Upgrade embed setuptools to 60.1.1 (#2258)
• 21bd7cb Update changelog.rst
• 36a4a18 Merge pull request #2255 from pypa/release-20.11.0
• 72106af release 20.11.0
• 592420e Add changelog
• 878c6e0 Fix the CI (#2254)
• ba3541c Bump embeded wheels (#2252)
• abc655e [pre-commit.ci] pre-commit autoupdate (#2242)
• bb82a73 Use 'selectable' interface for entry points only when available (#2246)
• Additional commits viewable in compare view

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[codecov-commenter]

Codecov Report

Merging #56 (938172e) into master (bcd59c8) will decrease coverage by 4.05%.
The diff coverage is 67.74%.

@@            Coverage Diff             @@
##           master      #56      +/-   ##
==========================================
- Coverage   55.00%   50.94%   -4.06%     
==========================================
  Files         124      123       -1     
  Lines        7243     7718     +475     
  Branches      752     1042     +290     
==========================================
- Hits         3984     3932      -52     
- Misses       3128     3632     +504     
- Partials      131      154      +23     

Impacted Files	Coverage Δ
benchbuild/utils/run.py	30.60% <0.00%> (-2.37%)	⬇️
benchbuild/source/git.py	69.56% <33.33%> (-8.77%)	⬇️
benchbuild/environments/adapters/podman.py	37.19% <38.61%> (-0.65%)	⬇️
benchbuild/cli/project.py	54.87% <39.21%> (-32.36%)	⬇️
benchbuild/environments/domain/declarative.py	77.58% <40.00%> (+12.67%)	⬆️
benchbuild/environments/service_layer/debug.py	40.00% <40.00%> (ø)
benchbuild/utils/slurm.py	73.75% <50.00%> (-4.34%)	⬇️
benchbuild/environments/adapters/buildah.py	53.36% <58.97%> (+20.80%)	⬆️
benchbuild/utils/revision_ranges.py	38.93% <61.90%> (-25.62%)	⬇️
benchbuild/environments/service_layer/ui.py	71.42% <64.70%> (+19.42%)	⬆️
... and 59 more

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[dependabot]

Superseded by #60.